Shaft keying device



M y p. c. MAIER SHAFT KEYING DEVICE Filed Jan. 20, 1922 mHm.EEEEL a..-

Patented May 12, 1931 UNETED STATES PATENT OFFICE DWIGHT C. MAIER, OFBRYAN, OHIO SHAFT KEYING DEVICE Application filed January 20, 1922.Serial No. 530,721.

i i said recess to engage a corresponding recess in the sleeve to befastened to said shaft. It is further proposed to arrange the ends ofthe key so that they willextend beyond the sleeve and be adapted to bebent or peened over the end of the sleeve for the purpose of preventingdisplacement of the key by an accidental longitudinal movement thereof.

With the foregoing and other objects in view, the invention consists inthe novel construc-tion, combination of parts and in the details ofconstruction hereinafter described and claimed and illustrated in thedrawings,

in which:

Figure 1 is a longitudinal section of the 535 improved device.

Figure 2 is an end View of the sleeve per se showing the recess toreceive the key and the slot to receive the bent end of the key.

Figure 3 is a side view of the sleeve per se.

Figure 4 is a side view of the key and Figure 5 is a top plan view ofthe device as shown in Figure 1.

Referring more particularly to the drawings, numeral 1 represents anupright post provided with an interiorly screw-threaded barrel 2 toreceive an externally screwthreaded sleeve 3.

The shaft 4 and the sleeve 3 are provided with opposing longitudinalrecesses 11 and 8 Q to receive the key 10. At each end of the advantageover the type of key in which the ma or portion thereof rests within theone member to be keyed, while only a lug or projection of the keyengages the other member to be keyed, in which case the efliciency ofthe key is impaired as a fracture of the lug or pro ection renders thekey inoperative and results in an undesired relative rotation betweenthe two members to be keyed together.

A further advantage of the proposed device resides in the feature of thebending or peening of the key over the ends of the sleeve, there beingan inwardly extending angular slot as shown in Fig. 8 in each end of thesleeve to receive said peened portion in order that a nut or the like(not shown) may be screwed on the sleeve and lie flush at either I endthereof. By this construction there is effectively eliminated thepossibility of longitudinal movement or removal of the key in the sleevewhen in operation.

Having thus described my invention, I

claim:

The combination with a shaft having a longitudinal recess in the surfacethereof, of a sleeve mounted thereon, said sleeve having a correspondinglongitudinal recess opposed to said shaft recess, a key extendingthroughout the length of said sleeve and engaging in both of saidrecesses and projecting ears integral with said key and on the endsthereof for securing said key to said sleeve, said sleeve being providedwith angularly extending surfaces engaged by said projecting ears onsaid key ends, said angularly extending surfaces being cut at an acuteangle relative to the longitudinal recess in said sleeve.

In testimony whereof I have aflixed my signature.

, DWIGHT C. MAIER.

